RTL/docker/rtl
saubyk 6e55059fe2 Add an Eclair node to the regtest docker fixture
Completes backend coverage of RTL's three implementations in the docker/
dev fixture: an eclair node (polarlightning/eclair 0.13.1) joins the three
LND nodes and the CLN node, wired to RTL over its HTTP API with basic auth,
and the seed opens an eclair->bob channel (3.5M sats, 1M pushed), sends two
direct payments and leaves one open invoice.

Non-obvious plumbing this needed:

- polarlightning/eclair instead of acinq/eclair: the official image is
  amd64-only (useless on Apple Silicon) and its newest versioned tag is
  years stale; Polar builds the same ACINQ source multi-arch.
- Eclair has no on-chain wallet of its own -- it drives a bitcoind wallet.
  A new eclair-wallet-init container creates a dedicated "eclair" wallet
  before the node starts; without it eclair attaches to "the default
  loaded wallet", i.e. the rtldev mining wallet.
- bitcoind now also publishes a zmqpubhashblock endpoint (28336): eclair's
  bitcoind.zmqblock consumes the hashblock topic, not the rawblock one LND
  uses. Wired to rawblock, eclair never sees new blocks and channels hang
  in WAIT_FOR_FUNDING_CONFIRMED.
- Eclair confirms channels at 8 blocks (channel.min-depth-blocks), not 6,
  and 'open' returns before the funding tx is broadcast -- the seed waits
  for the mempool and mines 8 blocks for this channel.

Adds a bin/e-cli helper (eclair-cli with the API password), updates the
README, and verified end-to-end: seed completes, the channel reaches
NORMAL, both payments settle, and RTL's /rtl/api/ecl endpoints return the
node, channel and invoice data.
2026-07-19 22:01:23 -07:00
..
RTL-Config.regtest.json Add an Eclair node to the regtest docker fixture 2026-07-19 22:01:23 -07:00